231320110131 has 24 divisors (see below), whose sum is σ = 364794131520. Its totient is φ = 140082577200.

The previous prime is 231320110111. The next prime is 231320110171. The reversal of 231320110131 is 131011023132.

231320110131 is a `hidden beast` number, since 231 + 320 + 110 + 1 + 3 + 1 = 666.

231320110131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231320110131 - 2¹⁵ = 231320077363 is a prime.

It is a super-2 number, since 2×231320110131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231320110111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 803305 + ... + 1052586.

It is an arithmetic number, because the mean of its divisors is an integer number (15199755480).

Almost surely, 2^231320110131 is an apocalyptic number.

231320110131 is a deficient number, since it is larger than the sum of its proper divisors (133474021389).

231320110131 is a wasteful number, since it uses less digits than its factorization.

231320110131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857167 (or 1857164 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 231320110131 its reverse (131011023132), we get a palindrome (362331133263).

The spelling of 231320110131 in words is "two hundred thirty-one billion, three hundred twenty million, one hundred ten thousand, one hundred thirty-one".